H10: manufacturing review: a review of manufacturing records was not performed, as additional complaints have not been reported for this lot.Based on the information available it is not reasonably suggested that a manufacturing process may have caused or contributed to the reported issue.However, the lot history records of this lot were reviewed with special attention to the manufacturing and inspection of this product and the product was found to have met the specification prior to shipment.Investigation summary: the stent delivery system was returned for evaluation.The inner catheter was protruding with a broken piece returned as part of the sample.The breakage site seems frayed which is considered to have resulted from the difficulty to remove the delivery system over the guidewire.The guiding tube connector was detached from the oval handle.In this case, it was noted that a device compatible guidewire was used, and the lesion was predilated.A detachment of the guiding tube from the oval handle was equally found during sample evaluation, which may have resulted in inadequate flushing of the delivery system.However, there was no report of difficulties during flushing.Based on the returned sample analysis, inner catheter break is confirmed.It is reasonably suggested that the break is related to the reported difficulties to remove the delivery system over the guidewire.However, a definite root cause of the reported issue cannot be identified.Labeling review: in reviewing the relevant labeling, it was found that the instructions for use (ifu) sufficiently address the potential risks.The instructions for use states: "should unusual resistance be felt at any time during the procedure, the entire system (guidewire, introducer sheath and delivery system) should be removed as a single unit." regarding preparation of the procedure and potential contributing factors the instructions for use states that "the 6fr delivery system requires a minimum 6f introducer sheath.(¿) the catheter tip is tapered to accommodate a 0.035¿(0.89 mm) guidewire." and "prior to inserting the delivery catheter over the guidewire, the system must be flushed with sterile saline at the two female luer ports until saline drips from the distal tip of the catheter." h10: (expiry date: 05/2022).H11: section a through f - the information provided by bd represents all of the known information at this time.Despite good faith efforts to obtain additional information, the complainant/reporter was unable or unwilling to provide any further patient, product, or procedural details to bd.
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